The stem has a slightly smaller diameter than the valve bore.
阀杆的直径略小于阀体孔的直径。
Stem material, and strive to stainless steel stem (2cr13), large diameter valves also should be embedded in the package of stainless steel valve stem.
阀杆材质，力求不锈钢阀杆(2cr13)，大口径阀门也应是不锈钢嵌包的阀杆。
With the valve in the fully closed position the stem length shall protrude a distance of at least twice that of the stem diameter above the top of the mounting flange.
在阀门完全关闭状态下，阀杆在连接法兰顶端上方需高出至少相当于阀杆直径两倍的长度。
The top flange of an extension stem, plug shaft diameter, and distance across flats on plug shaft are the same size as the valve selected.
订购时，请指明阀门尺寸、规格型号，以及从阀门法兰到延长件法兰顶部的准确距离（用户指定的长度如右图所示）。
The top flange of an extension stem, plug shaft diameter, and distance across flats on plug shaft are the same size as the valve selected.
订购时，请指明阀门尺寸、规格型号，以及从阀门法兰到延长件法兰顶部的准确距离（用户指定的长度如右图所示）。
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